Low-friction exercise device



FIG. 1 is a perspective view showing a low-friction exercise device;

FIG. 2 is a top view thereof;

FIG. 3 is a bottom view thereof; and

FIG. 4 is a side view thereof, each of the front, rear, left and right sides being identical.

The broken lines are for the purpose of illustrating environment and form no part of the claimed design. 

CLAIM The ornamental design for a low-friction exercise device, as shown and described. 